Large Model Systems (LMSYS Corp.) is a 501(c)(3) non-profit focused on incubating open-source projects and research. Our mission is to make large AI models accessible to everyone by co-developing open models, datasets, systems, and evaluation tools. We conduct cutting-edge machine learning research, develop open-source software, train large language models for broad accessibility, and build distributed systems to optimize their training and inference.
LMSYS originated from a multi-university collaboration involving UC Berkeley, Stanford, UCSD, CMU, and MBZUAI in 2023. It was incorporated as a non-profit in September 2024 to incubate early-stage open-source and research projects.
It became well-known for its impactful flagship projects, including Chatbot Arena (graduated), SGLang, FastChat, and Vicuna. These projects feature open models with millions of downloads, crowdsourced platforms with millions of users, and efficient systems that are orders of magnitude faster.
Sponsors
LMSYS is supported by donations from the following institutions:
Voltage Park, NVIDIA, Nebius, Google Cloud, AtlasCloud, a16z, AMD, InnoMatrix, Laude Institute, Hyperbolic, NovitaAI, Verda Cloud, Sky9, Kaggle, MBZUAI, Together, RunPod, Anyscale, HuggingFace
We welcome diverse forms of donations and sponsorships, including but not limited to cash, computing devices (e.g., GPUs), and cloud credits. Please refer to Donations.